
public class math {
	public boolean iszhishu(int x)
	{
		for(int i=2;i<=x/2;i++)
			if (x % 2==0 )
				return false;
				return true;
	}
	
	public boolean shuixianhua(int x){
		int a=0,b=0,c=0;
		a=x/100;
		b=(x%100)/10;
		c=x%10;
		if(x==a*a*a+b*b*b+c*c*c)
			return true;
		else
			return false;
	}

}
